Plaster-board stud and lock



l// l/ I/ IIIII/ III/IIIIIIIII'III/[l/l T COLLINS PLASTER BOARD STUD ANDLOCK Original Filed Feb. 13, 1929 (III/I11 IIIIIIIII Aug. 23, 1932.

Inn/e nio 1-. 117720116 (011 6- Z arnps Patented Aug. 23, 1932 UNITEDSTATES, PATENT OFFICE;

TIMOTHY ooLnINs, on LOS ANGELES; CALIFORNIA,-ASSIGNOR or ONE-HALF 'roAn'rrrum W. NASH, or LOS ANGELES, CALIFORNIA p r I eii .. when the pressagainst the vide a plaster constructed that it may be inserted throughthe center of a plaster board to fasten the boards against the studswith the joints between the plaster boards broken or.

rLAsrnn-BoAnn s'run AND LOCK Application filed February 13, 1929,SerialNo. 339,608. Renewed January 28, 1932.

This invention plaster board studs and locks and may be considered as an7 struction disclosed in my prior Patent No. 1,697 ,521, issued January1,1929..

An object of this invention is to provide an improved plaster board studand lock wherein the stud has a plurality of circular'perforations orapertures therein, adapted "to receive the looks or keys which arecaused, on rotation,- to bind in the apertures so that they will fastenthe plaster boards firmly to the studs. r I

Another object of the invention is to provide a'plaster board lock orkey which may be easily, quickly and cheaply constructed out-ofheavywire or'similar material and which is, to a certain extent, resilient sothat plaster boards engaged thereby, causing the plaster boards to becontinually and tightly held against the studs.

A further object of the invention is to-pro board key or look which isso plaster board to a stud. By such a construction it is possible toassemble the plaster vertical in staggered relation, employing some keysor locks at the ends of others at their centers.

Another object of the invention is to pro-' vide a plaster board wallconstruction wherein the plaster boards are assembled with theirvertical joints in staggered relation.-

.With the foregoing and other objects in.

view which will be made manifest in the following detailed descriptionand specifically pointed out in the appended claims, reference,

is had to the accompanyingdrawing for the illustrative embodiment of theinvention, wherein:

Fig. 1 is a partial view in perspective, illustrating the improvedplaster board wall construction in the process of erection andillustrating the improved studs and locks.

' Fig. .2'is a horizontal through one of the studs.

relates to improvements in improvement over the 0011-;

keyis mounted on the stud it will the plaster boards and" clined to thesection "taken toward the portion 14: so that the shank in Fig. 3 is aor key holds the marginal edges of twoad jacent plaster boards thereto:

Fi'gA'is a top or looks.

Fig.55 is a viewin elevation of the lock shown in Fig. 4 the arrow'5upon {Fig. 4. a Fig. 6 is a top plan view of a slightly modifiecllI formof construction of plaster board Fig. 7 is a view in sideelevation ofthe same taken substantially in the direction of the arrow 7 upon Fig.6. i F igl8 is a view in side elevation of a still further modified formof construction.

Referring to the accompanying drawing wherein similar referencecharacters designate similar parts plaster board wall constructioncomprisesa plurality of vertically arranged studsjlO. These studs, inthe preferred form of construction are channel irons having a row ofperforations 11 formed in each of its sides. The perforations 11 arecircular or approximately circular in form and are adapted to keys orlooks. Sevreceive the shanks of the eral different types of keys orlocks are provided which may be optionally employed or which may besubstituted, one for the other. The preferred form of lock is shown inFigs. 21 to 5, inclusive and comprises a shank l2 slightly smaller indiameter than the diameters of the perforations ,11 so that it may beeasily inserted in the perforations. At the'top of the shank there is ahead which extends laterally from one side of the shank only. The headin the modification shown in Figs. 2 to 5, inclusive comprises two portions indicated at 13 and 14;. are arranged at an angle toeach otherwhich, is slightly less than tween the shank12 and the portion 13 "isslightly less than- 90 degrees.

7 As clearlyv shown in Fig. 4 the shank is,

not only inportion 13 but is inclined also reality forms an angleslightly less than 90 plan view of oneof the keys taken in the directionor throughout, the improved These portions 90 degrees and the an Ipartial view in elevation ofastud illustrating the manner in which alock degrees with the plane which contains ter board P is placed againstthe wall and a the portion 14 is plurality of the keys and their shankspositioned in the perforations 11.-

der side of the portion 14 is slightly lower or behind the outer surfaceof the plaster boa-rd P. The key is then rotated, causing the portion 14to be'sprung slightly and tobe slidover the outer face of the plasterboard. The rotation and tension placed on the key causes the shank 12 tobind in the perforations so that it cannot the perforation. Also, byvirtue of the inclination of the shank to the portions 13 and 14 of thehead, a screwing or tightening action takes place during the rotation.After the portion 14 has been swung over the outer face of the plasterboard the rotation is continued until the portion 13 is also over theplaster board. An adjacent plaster board P can then be positionedagainst the shank and the key then reversely rotated'until it assumesthe position shown in Fig. 3 where-- in the portion 13 of the headextends over the outer face of the plaster board P and lappingv orextending over thevertical joint between the plaster boards Band PInthis manner a single key can be caused to hold the marginal edges oftwo adjacent plaster boards tightly and firmly against the stud. Theresiliency of the key causing it to act like a spring pressing the boardagainst the studs. 7 p v A feature of the invention resides in the factthat the perforatlons 11 are circular in form and the tighteni-ng iseffected by the rotation of the shanks 12 on substantially their ownaxes. By thus having theperforations small in diameter and circular thestrength of the studs is, adequately preserved and also no lateral orlongitudinal sliding need take place to lock the. plaster boards tothestuds. This feature is also important in that it enables a plaster boardwall to be constructed wherein the vertical jointsbetween the plasterboards are broken or are in staggeredrelation as shown in Fig. 1. Theplaster boards may have-apertures therein of approximately the same sizeas the perforations 11 and the keys may be extended through theapertures into the studs and tightened therein. Such keys will belocated at the centers so that each plaster board will be firmly lockedin place at its center as well asat its 7 ends. Theadvantages of havingbroken or They are pushed into the perforations sothattheun be withdrawnfrom formed of the plaster boards These keys are of substantially thesame construction as that shown in Figs. 2 to 5 inclusive, with theexception that the portion .13 on the head is much shorter than theportion '13, The inclination of the shank 12 with respect to theportions 13 and 14 issubstantially the same as the inclination of theshank 12 with respect to the portions 13 and 14. V

In Fig. 8 there is a further modified form of construction 'whereln thekey is shown as haying a shank15, a laterally. extending head 16, and a'downwardly bent end 17. The shank 15,as shown, forms an anglewith thehead 16 slightly less, than ;90degrees, so that when the end 17 ispressed against the plaster board it will tend to cause: the .shank 15to tilt slightly in the aperture 11; and to bind therein. r r

From the abov perforations 11 as long as the head is. under tensionandpressing the plaster boards tightthus forming a rigid,

1y againstthe studs sturdyplaster board wall. j Various changes maybemade in theidetails of construction without departing from the spirit orscope of the invention asdefiried by the appendedclaims. a V Iclaimz. a1 1. 'A- plasterboard lock comprising a single piece of wire bent toprovide .a shank and a head,.the head being tions arranged at an angleto each other in approximately the same plane, thev shank forming anangle of less than ninety degrees with the portion connecting theshankwith the apex ofthe angle. 2. A plaster board lock comprising aqsimgle pieceof wire bent to provide a shank and a head, the head beingformed of two pertions arranged at an angle to each other in taining theshank and the portion connect-f thusenabling a plaster to be erectedwith .Theimprovedkey cannot be withdrawn from the apertures or vdescribed constructions .it 7 will be readily appreciated that theimproved formed of two'poring the'shank to the apex of the angleforrming an. angle of less thanninety degrees with the remaining portionofthe head.

a '3. A plaster board lock comprising a single piece of wire bent toprovide ashankand a slightly resilient head which projectslaterally fromone sideoftheshank only, said shank forming an angle of less than ninetydegrees with said head.

4:. A plaster board lock comprising a single piece of heavy wire bent toprovide a shank, and a head formed of a connecting portion and an outerportion, the connecting portion and outer portion forming an angle ofless than ninety degrees, and the shank and connecting portion formingan angle of less than ninety degrees, the shank also forming an angle ofless than ninety degrees with the plane joining the outer portion Withthe top of the shank. V

In testimony whereof I have signed my name to this specification.

' TIMOTHY COLLINS.

